John t



(No Model.)

J. T. SMITH.

AUTOMATIC. OILER.

No. 365,153. Patented June 21, 1887.

FIG. 1.

N PETERS, Fnowumo n mr, wu'nirmn. D. c.

NITED STATES PATENT Orrrcn.

JOHN T. SMITH, OF SAN FRANCISCO, CALIFORNIA.

AUTOMATIC OILEFL SPECIFICATION forming part of Letters Patent No. 365,153, dated June 21, 1887.

Application filed October 2, 1896. Serial No. 215,180. (No model.) i

To all whom it may concern:

Be it known that I, JOHN T. SMITH, of the city and county of San Francisco, State of California, have invented an Improvement in Automatic Oilers; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to an improved automatic or self-operating oilcr; and it is especially designed as an improvement upon my Patent No. 306,542, of October 14, 1884.

In my present improvement I have shown a method of constructing the oil tube or extension and a means for adapting the compres sion of the screw to the ordinary oil-cup, a means for preventing the porous packing from being compressed into too solid a mass, and also an improved construction ofa conical tapering rod which enters the tube, with certain details of construction, all of which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a vertical section of my oiler, showing it applied to an ordinary oil-cup. Fig. 2 shows the conical-pointed stem. Fig. 8 shows the tube alone. Fig. 4 shows a long tube with an interior compression-tube. Fig. 5 is a view of the tube-bottom. of the compressionscrew.

A is the oil-cup, which may be of any suitable or desired form of construction to suit the place where it is to be employed. Through the bottom of this cup a tube, 0, extends, the upper end rising within the cup sufficiently high so that any sediment which may settle from the oil within the cup will settle in the space around the tube and not enter it. That portion of the tube which projects below the cup is made of sufficient length to reach the point to be lubricated. In some cases the tube may be made as much as ten or twelve inches in length, so as to pass down through the hole made for it and allow the lower end of the tube to approach near to the revolving shalt or other part which is to be lubricated. In the present case I have shown an improved method of forming the bottom of this tube,so that it can be made very economically. The tube may be made of brass or other metal, and the lower end is made thin, and is Fig 6 is a view hammered or otherwise drawn together or slightly contracted.

A copper or othersuitable metallic disk, D, is swaged or formed so that one side is convex and the other concave, a hole being made through the center, as shown. This disk is of such diameter that it will just slip down inside the tube until it reaches the contracted lower end, which preventsits slipping through. This end, with thedisk inside, isthcn set into a swage or formed, and a rod having a convex end is then introduced within the tube, and with some blows of a hammer the copper disk is firmly swagcd within the lower end of the tube. The outer or convex side of this disk is then grooved or channeled radially, so that it it approaches very nearly or rests in actual contact with the shaft or surface to be lubricated the oil may flow out from the centralopening through these transverse channels, and thus be properly distributed.

\Vithin the tube, and in close proximity with the bottom,I place a filling of any suitable porous substance, and above this is placed a short spiral spring, E, which is also filled with a porous substance, as shown. The upper end of the tube is screw-threaded internally, and a disk or nut, F, is fitted to be moved up and down in these screw-threads by means of a shank or stem, G. This shank may be made of any desired length. In ordinary shaft-cups it will not extend up quite to the top or cover of the cup, and has its upper end so formed that it may be turned, so as to screw the disk down into the tube, and thus compress the fibrous or porous filling within the tube to any desired extent.

The traveling disk or nut F will be slotted or channeled in one or more places on the edge, so as to allow the oil to pass down into the tube. It will be manifest that the shank G may be extended up through the cap or cover B of the cup, and that the screw-threads may be formed upon this shank andturned in similar threads formed in the cap, as shown in my former patent. In such cases the stem or shank may be hollow and oil fed into the cup or into the tube below through it; but in many cases it is better to have the whole mechanism within the cup.

'rial; but when it is relieved it will spread the material out again and cause it to regain its loose or porous form,and thus prevent it from being permanently packed or compressed by any usage. In some cases of shaft-oilersthe stem G extends down into the tube, and has at its lower end a long conical point, H, which extends down into the fibrous packing at the bottom of the tube, and it has an enlargement or collar, I, at the upper end of this conical point, as shown. Slots or channels a are made in the edges of this collar, to allow the oil to flow down into the packing which is contained around this point,and within which the spiral springis also fitted, as shown in Fig. 2. When this device is used, if the oil flows too freely, or it is desired to prevent its flow, the shaft is screwed down and the collar presses the fibrous material downward, while the conical point entering it at the same time spreads it out and'causes it to become packed more tightly within the tube, thus impeding or stopping the flow of oil to any desired extent. It will be manifest that when used in the hub of a loose pulley or of a vehicle,or in other places press upon the packing in the bottom, as beradial channels in its lower surface, intersect ing with the central opening, substantially as herein described.

*2. The lubricating-tube extending downwardly and a perforated bottom swaged or secured within the tube, as shown, in combination with a screw-threaded disk having a shank or stem extending upwardly into the cup, said disk traveling in corresponding threads in the upper end of the tube, a paekingot fibrous material in the lower end of the tube, anda spiral spring having its interior filled with asi milar packing,which may be eompressed and expanded with the spring by the action of the disk, substantially as herein described.

3. A lubricating tube extending downwardly, with a convex perforated bottom fit-.

ted into it, as shown, in combination witha screw stem or shank extending downwardly into the tube, having a tapering or conicalpointed lower end, and a collar at the upper end of the cone, and the fibrous packing and spring into which the cone-point extends, substantially as and for the purpose herein described.-

In witness whereof I have hereunto set my hand.

JOHN T. SMITH.

\Vitnesses:

S. H. NoURsE, H. 0. LEE. 

